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/**
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* Copyright (c) 2020, Timothy Stack
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*
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* * Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* * Neither the name of Timothy Stack nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ''AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "highlighter.hh"
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#include "config.h"
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highlighter&
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highlighter::operator=(const highlighter& other)
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{
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if (this == &other) {
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return *this;
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}
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this->h_name = other.h_name;
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this->h_fg = other.h_fg;
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this->h_bg = other.h_bg;
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this->h_role = other.h_role;
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this->h_regex = other.h_regex;
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this->h_format_name = other.h_format_name;
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this->h_attrs = other.h_attrs;
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this->h_text_formats = other.h_text_formats;
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this->h_nestable = other.h_nestable;
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return *this;
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}
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void
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highlighter::annotate_capture(attr_line_t& al, const line_range& lr) const
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{
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auto& vc = view_colors::singleton();
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auto& sa = al.get_attrs();
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if (lr.lr_end <= lr.lr_start) {
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return;
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}
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if (!this->h_nestable) {
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for (const auto& attr : sa) {
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if (attr.sa_range.lr_end == -1) {
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continue;
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}
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if (!attr.sa_range.intersects(lr)) {
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continue;
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}
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if (attr.sa_type == &VC_STYLE || attr.sa_type == &VC_ROLE
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|| attr.sa_type == &VC_FOREGROUND
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|| attr.sa_type == &VC_BACKGROUND)
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{
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return;
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}
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}
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}
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if (!this->h_fg.empty()) {
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sa.emplace_back(lr,
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VC_FOREGROUND.value(
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vc.match_color(this->h_fg)
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.value_or(view_colors::MATCH_COLOR_DEFAULT)));
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}
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if (!this->h_bg.empty()) {
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sa.emplace_back(lr,
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VC_BACKGROUND.value(
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vc.match_color(this->h_bg)
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.value_or(view_colors::MATCH_COLOR_DEFAULT)));
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}
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if (this->h_role != role_t::VCR_NONE) {
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sa.emplace_back(lr, VC_ROLE.value(this->h_role));
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}
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if (!this->h_attrs.empty()) {
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sa.emplace_back(lr, VC_STYLE.value(this->h_attrs));
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}
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}
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void
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highlighter::annotate(attr_line_t& al, int start) const
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{
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if (!this->h_regex) {
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return;
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}
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auto& vc = view_colors::singleton();
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const auto& str = al.get_string();
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auto& sa = al.get_attrs();
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auto sf = string_fragment::from_str_range(
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str, start, std::min(size_t{8192}, str.size()));
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if (!sf.is_valid()) {
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return;
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}
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this->h_regex->capture_from(sf).for_each(
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[&](lnav::pcre2pp::match_data& md) {
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if (md.get_count() == 1) {
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this->annotate_capture(al, to_line_range(md[0].value()));
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} else {
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for (int lpc = 1; lpc < md.get_count(); lpc++) {
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if (!md[lpc]) {
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continue;
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}
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const auto* name = this->h_regex->get_name_for_capture(lpc);
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auto lr = to_line_range(md[lpc].value());
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if (name != nullptr && name[0]) {
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auto ident_attrs = vc.attrs_for_ident(name);
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ident_attrs.ta_attrs |= this->h_attrs.ta_attrs;
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if (this->h_role != role_t::VCR_NONE) {
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auto role_attrs = vc.attrs_for_role(this->h_role);
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ident_attrs.ta_attrs |= role_attrs.ta_attrs;
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}
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sa.emplace_back(lr, VC_STYLE.value(ident_attrs));
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} else {
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this->annotate_capture(al, lr);
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}
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}
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}
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});
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}
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